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LTC3561A Datasheet Synchronous Step-down DC/dc Converter

Manufacturer: Linear Technology (now Analog Devices)

General Description

The LTC®3561A is a constant frequency, synchronous step-down DC/DC converter.

Intended for medium power applications, it operates from a 2.5V to 5.5V input voltage range and has a user configurable operating frequency up to 4MHz, allowing the use of tiny, low cost capacitors and inductors 1mm or less in height.

The output voltage is adjustable from 0.8V to 5.5V.

Key Features

  • Uses Tiny Capacitors and Inductor.
  • High Frequency Operation: Up to 4MHz.
  • Low RDS(ON) Internal Switches: 0.15Ω.
  • High Efficiency: Up to 96%.
  • Stable with Ceramic Capacitors.
  • Current Mode Operation for Excellent Line and Load Transient Response.
  • Short-Circuit Protected.
  • Low Dropout Operation: 100% Duty Cycle.
  • Low Shutdown Current: IQ ≤ 1µA.
  • Low Quiescent Current: 330µA.
  • Output Voltages from 0.8V to 5V.
  • VIN: 2.5V to 5.5V.
  • Small 8-Lead.

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LTC3561A Distributor